BrianKitts Posted May 31, 2006 Share Posted May 31, 2006 I'm curious to what AA filters everyone is using.... and most importantly, do you know why??? When I started using vray i used "AREA" cause it was default, then I switched to "Mitchell-Netravall" because 90% of the tutorials I saw were using it. The other day I read a post where someone suggested using "Catmull-Rom".... Has anyone done any comparrison testing against the different options or able to explain what works better for what situations? I'd like to do some testing myself as soon as the work load dies a little, but for now I thought I'd just toss this one out there..... any thoughts? Link to comment Share on other sites More sharing options...
olbo Posted May 31, 2006 Share Posted May 31, 2006 Hello Brian, hopefully this will save you some time. The comparision is made by Gijs at the chaosgroup forum, so all props to him. ;o) AFAIK a lot of people are using Mitchell-Netravali and then do a Unsharpmask in Photoshop, because Catmull-Rom is a bit slower ... take care Oleg Link to comment Share on other sites More sharing options...
BrianKitts Posted May 31, 2006 Author Share Posted May 31, 2006 wow.... exceptional reply... thanks that definately answered the question Link to comment Share on other sites More sharing options...
olbo Posted May 31, 2006 Share Posted May 31, 2006 It was my pleasure. take care Oleg Link to comment Share on other sites More sharing options...
tahoon Posted September 25, 2006 Share Posted September 25, 2006 execuse me But do u guys see any diffrence in quality between those filters .. sorry but my eyes tell that they are alla the same.... Link to comment Share on other sites More sharing options...
Brian Smith Posted September 25, 2006 Share Posted September 25, 2006 The type of filter you use has a lot to do with the final product and the materials being used. If you're creating an animation, Catmull and Mitchell are using not suitable choices because of flickering due to sharp variances between neighboring pixels. Area is a good choice for animations as is Video, however, both of these take significantly longer to render. Using appropriate materials, sumpersampling, rendering hi and down converting to a lower resolution are all ways to get under having to use these filters that blur the animation more. There's so much more involved when the final product is an animation. Link to comment Share on other sites More sharing options...
manta Posted September 25, 2006 Share Posted September 25, 2006 execuse me But do u guys see any diffrence in quality between those filters .. sorry but my eyes tell that they are alla the same.... Yes, there are definite differences, you just need to look closely... Link to comment Share on other sites More sharing options...
Hoa Dinh Posted September 25, 2006 Share Posted September 25, 2006 you can used acdsee to see diffrence in quality Link to comment Share on other sites More sharing options...
anvaraziz Posted September 25, 2006 Share Posted September 25, 2006 its written clearly on vray helpfile,, take a look . LINK regards Link to comment Share on other sites More sharing options...
BrianKitts Posted September 25, 2006 Author Share Posted September 25, 2006 wow.... forgot about this thread from the past... nice link ANVAR, thx Link to comment Share on other sites More sharing options...
Christopher Nichols Posted September 26, 2006 Share Posted September 26, 2006 One thing to keep in mind with filtering is to be careful of sharpening filters like Catmul and Mitchell... This can be an issues with some of the new vray features which can create super hot pixels, such as with the VraySun, or some of the Domelights and HDRIs. The issues with those is that when some pixels have a value of 30 next to pixels of a vlaue of 0.03 (in float) you can get negative colors on those edges due to the sharpening filter. Avoid this by using a softening filter instead, such as soften at a value of 3 or so, or using some of the new Vray filters. Link to comment Share on other sites More sharing options...
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